This document provides an overview of cognition and intelligence, including definitions, related cognitive functions, types of intelligence, and methods of assessment and testing. It focuses on examining specific cognitive functions like attention, language, and memory. Tests are described to evaluate various aspects of cognition, such as digit repetition for attention, verbal fluency tests for language production, and confrontation naming for word retrieval. The levels of consciousness, anatomy of attention and language networks, and clinical implications of deficits are also summarized.